Boys vs Girls

The average weight of girls is 15 and the average weight of boys is 30 and the average weight of boys and girls both is 25. If the number of boys are 12, then the number of girls is :

The ratio of the boys to girls in a class is 2:3 . If 20% of boys leave this class,then the new ratio of boys to girls is

Boy and Girl standing in a queue

In a classroom, one-fifth of the boys leave the class and the ratio of the remaining boys to girls is 2:3. If further 44 girls leave the class, the ratio of boys to girls is 5:2. How many more boys should leave the class so that the number of boys equals that of girls ?

In a school, 10% of boys are equal to the one-fourth of the girls. What is the ratio of boys and girls in that school?